Question about Mission 70ASA Speaker

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Speaker suddenly emits very loud noise. Have to unplug it.

I have used this sub woofer for many years. It is always plugged in to 120v but suddenly it gave out this ear splitting noise!

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  • Ken Hobden Jan 24, 2013

    Has anybody else experienced this? The low frequency sound like a very loud rumble cannot be tolerated for even a second. When it happened it could be heard all over the house.

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Bad capacitor(s). Happened to mine too. Opened it up to find 2 completely blown apart, and 1 bulging. Relatively cheap and easy to replace.

Posted on Oct 05, 2014

  • Allan
    Allan Oct 15, 2014

    Went through with the repair that I thought was easy. Turns out the module (silver aluminum sealed block on the circuit board) was the cause and is non-replaceable due to being a poor design to begin with. A whole new class D plate amplifier is the most cost-effective solution.

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